Lithospheric architecture and tectonic evolution of the Hudson Bay region

The Hudson Bay Arc including the Sutton Inliers in the south-west of the structure. Folded strata related to the Sutton Inliers are shown aeromagnetically to extend discontinuously northwards towards the Hudson Bay coast upon apparently reworked Archean crust within the Trans-Hudson Orogen. The Trans-Hudson Orogen, including areas of reworked Archean crust, appears to underlie the northern half of the Hudson Bay Lowland, based on interpretation of aeromagnetic images.

The position of the Elbow impact structure is illustrated by the superimposed circle in the background. The Gardiner Dam, under the wing of GO ZooM, is the largest embankment dam in Canada and one of the largest embankment dams in the world. Lake Diefenbaker is upstream. The dam rises 64 metres (209 feet) in height, is almost 5 km (3.1 mi) long and has a width of 1.5 km (0.93 mi) at its base with a volume of 65,000,000 cubic meters.

Maple Creek – the superimposed circle illustrates the position of the buried crater. This image, aimed looking west at the approximate point of impact, was taken from GO ZooM at approximately 2500 feet AGL.

I took this image in 1996 while flying over the Golden Gate Bridge, the peak of the bridge is just visible in the lower left. San Francisco is in the foreground and looking east, the position of the Victoria Island Structure is visible in the far distance of the image centre.